Pipe-line strainer



E. J. 'DREXLER PIFE LINE STRAINER Aug. 23 1927. 1,640,Q 70' Filed Aug. 5, 19.25

PatenteclAug. 23, 1927.

EARL J. DREXLER, OF CHICAGO, ILIiINOIS.

I'IIE-LINE STRAINEB.

Applicatioxi filed August 3, 1925. Serial N0. 47,687.

This inve ntion relates to tliat type of straining devices for insertion in the water supply pipes or mainsor bnildings to effect a rec-ention and ren1oval of fish and other solid 1natters With whioli the water supply may be contan1inated, and the present i1nprove1nent has for its object T provide a structural formation and combination of parts whereby an eifeotive interception of the solid impurities in tl1e water is-attained, with a ready and oonvenient removal of the sa1ne from time to time as required, and with Which the 1neshes of the screening 1neans are oleaned 0f any matter clogging the sarne in an effective and. automatic manner' during the re1noval 01 the solid impurities from the device, all as Will hereinafter more fully appear.

In the accompanying drawing:

'Fig. 1, is a transverse section on line 1-1, Fig. 2 of a strainer involving the preferred for1n of the invention.

Fig. 2, is a longitudinal section 0n line 2 2 Fig. 1.

Fig. 3, is a side elevat-ion illustrating the operating meohanism of the revolulole elements o1 the strainer.

L1ke reference nu1nerals indicate like arts in the different views.

The 1nain casing or shell 1 of the strainer is for1n.ed with a circular chamloer closed at its respective ends by heads 2 and 3, formed with axially arranged bearings for the journal spindle of the hereinafter described revoluble strainer head Near its upper end the shell 1 is forrned' with oomplementary necks 4 and 5, tangential to tl1e circular cavity of ahe Shell and constituting the inlet and the outlet neoks for the water flowing throngh the device. The aligned relation of the neoks 41, 5, as shown, permit of a ready applioation of the devioe in a pipe line of the water system and with either neck 4 01 5 acting as the inlet or the outlet neck. At

its lower end the casing 1 is formed with a drain neck 6, the passage of whioh is norm-ally closed by a valve head 01 other usual 1neans, until a drainage or blow-ofl. of the impurities from the device is desired, and in whioh case the valve or other passage con trolling 1neans Will be opened.

The revoluble strainer head of the device comprises a central hub portion 7 formed witl1 end bearing spindles by whieh it is journalled in the casing heads 2, 3, aforesaid, with One spindle 8 passing in fluid tight nmnner out through astufiing box 9 on one 01" the casing heads and carrying t-he operat ing 1neans hereinafter described. In the present improvement the hub portion 7 carries a plurality of radially extending screen carrying frames 10, the 0utei and side rails of whirh have a close sliding fit u'pon the inner surfaces of the circular chamber of the casing 1. The central open portions of said frames carry webs 11 0f woven wire or like foraminousn1aterial adapted to function as a screening lneans in the present structure.

VVith the construotion above described, the interior of the casing 1 is sulodivided into a plurality of sub-chambers through which the water passes in'its travel fron1 the inlet to the outlet neck of the struoture, with said sub-chambers adapted, by a partial rotation of the strainer head, to be successively brought into communication with the aforesaid drain neck6 so that the trapped and impure contents may be blown o11t or dis charged.

The closure means of tl1e drain neck 6 in the conscruction shown is the ordinriry form 0f a revoluble plug 12, tl1e operating stem of which carries an operating handle or lever 13 by which the plug 12 may be turned fro1n an Open to a closed position and Vice-Versa, Wliile in the preferred oonstruction of part-s, the lever 13 oarries a lug or tappet 14 for operative engagement with the revoluble strainer head aforesaid by intermediate means as follows:

A ratchet wheel 15 formed with a plurality of ratchet recesses corresponding in number with the radial screen fran1es aforesaid, is fixed 011 the journal spindle 8 0f said frames, and is adapted for engage- 1nent by a holding dog or paw1 16 to insure a proper operatix e position of the screen frames in the interior of the containing chamber and witl1 relation to the inlet and out-let neoks 4, 5, and said holding pawl 16 is of the reversible form, so that it may be reversed as required, to pr(event accidental rotation of the strainer head in a direotion the same as the flow 0f water through the device, and thus 1neet the requirements where the flow is either to the right or to the left.

Vith the above described construct-ion of the operatihg lever 13, valve head or plug 12, and ratchet wheel of the screen frames 10, an automatic movement control between t1e parts is provided, in that 2LS the lever 13 is given apartial turn t0 open the valve head 01' plug 12, the lug 14: 011 seid lever iS adupted t0 engage in an adjacent notch 01 recess of the ratchet wheel 15, and during such opening movement cf the valve head er plug 12, impart a partial tutning movement m the screen head and bring a succeeding sub-chember thereof. into communication with the drain neck 6 of the struetu1e. Nith such arrangement a series 0'f revolutions 0f ahe le.'er 18 is adapted t0 bring the ent-ire series cf sub-chambers int0 successive connection with the drein neck 6.

Having thus fully described my invention what 1 claim and desire to secure by Letters Patent, is

In wstrainer for water pipes, a casing having a circular chmnber, inlet and out1et passages at its respective sides, and a 0011- trollable drein assage at bottom, a revoluble va1ve member controlling seid drein passage, a revoluble strainer head arranged in the aforesaid circular chamber, the same comprising a serles Qf screen frames mounted radia1ly 0n a central hub and carrying the screening webe 0f the structure, means f01 positioning said strainer head in its turning adjustments, the same eomprising a ratchet whee1 011 the carrying hub of the strainer head, and a holding paw1 pivoted 611 the Side o'i the casing in operative relati0n to seid r atchet Wheel, and an o13emtiz 1'g lever engaging the va1ve member aforesaid and having a projecting stud adapted f01 operative engagement witn the ratchet wheel.

Signed at Chicago, I11inois, this 30th day 0f Ju1y, 1925.

EARL J. DREXLER. 

